Boiler-tube.



PATENTED FEB. 27, 1906.

W. G. BRAGKEN.

BOILER TUBE. APPLICATION FILED AUG. 23,1905.

I WITNESSES @WJ UNITED STATES PATENT OFFICE.

BOILER-TUBE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed August 23, 1905. Serial No. 275,471.

To all whom it may concern.-

Be it known that 1, WILLIAM G. BRAOKEN, a resident of Gallitzin, in thecounty of Cambria and State of Pennsylvania, have invented a new anduseful Improvement in Devices for Leaky Boiler-Tubes; and I do herebydeclare the following to be a full, clear, and exact descriptionthereof.

My invention relates to devices for leaky boiler-flues, and has for itsobject to provide a cheap, simple, and efl ective device which caneasily and quickly be applied to a leaky boiler-flue at any time andwithout the em ployment of any complicated machines or tools in handlingthe same.

My invention consists, generally stated, in the novel arrangement,construction, and combination of parts, as hereinafter more specificallyset forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains toconstruct and use my improved device for leaky boilerflues, I willdescribe the same more fully, referring to the accompanying drawings, inwhich Figure 1 is a side elevation, partly in section, of my improveddevice for leaky boilerflues, showing the same applied to a boilerflue.Fig. 2 is a cross-sectionof the same with the flue-sheets removed andlooking at one of the ends of the device.

Like symbols of reference herein indicate like parts in each of thefigures of the drawings.

As illustrated in the drawings, A represents one of the ordinaryboiler-flues, which is usually set Within a boiler and between andthrough the flue-sheets a and a, which are located at the fire-box endand the smokebox end, respectively, of the boiler. In case of a leakwithin such flue A and at any part thereof and it is desired to stop thewater from entering said flue a tube 1 is provided, which is slightlysmaller exteriorly in diameter than the interior diameter of said flue,and one end 1 of said tube is screw-threaded exteriorly, as at 2. Aflexible or yielding washer 2, formed of graphite, asbestos, or othersuitable non-combustible material, is placed over said end 1 of thetube, and then a collar or nut 4 is screwed onto said portion 2, so asto come against the washer 2 when in position. The tube 1 can now beplaced within the flue A at the fire-box end of the boiler by insertingthe end 1 of said tube into the flue and passing the same through saidflue so that the said end 1" will extend beyond the flue-sheet a. A likenon-combustible and flexible or yielding washer 5 is then inserted overthe end 1 of said tube 1, and then a metal washer 6, which is exteriorlythreaded to engage a threaded portion 2 on said end 1", is screwed ontosaid tube end and against the washer 5 to press the same against theface of said flue-sheet a, after which a collar or nut 7 is placed onsaid end and screwed upon the threaded portion 2 thereof against themetal washer 6. When the washer 6 and nut 7 have been screwed up intoplace, the washers 2 and 5 will be pressed tightly against the faces ofthe flue-sheets a and a, thereby bringing the tube 1 to a centralposition and forming an annular chamber 8 between the interior of theflue A and the exterior of the tube 1 and the flue or draft chamber 8within the same to take the place of the boiler-flue A, so that thewater Within the boiler will enter and circulate within such chamber 8through the leak in the flue A and the smoke will pass from the fire-boxthrough the draft-chamber 8 to the stack.

The collars or nuts 4 and 7 on the ends 1 and 1, respectively, of thetube 1 have, preferably, the usual hexagon-shaped faces 9 thereon, sothat they can be screwed and unscrewed on said ends by the ordinarymonkey-wrench; but in case said nuts are in close proximity to the sidesof said boiler or in such a position that they cannot be engaged by awrench said nuts can be provided with seats 9, formed in the points orapices 9 of said faces 9 in order that the ordinary spanner- Wrench canengage said seats by its pins to screw or unscrew said nuts on saidtube.

Various other modifications and changes in my improved device for leakyboiler-flues may be resorted to without departing from the spirit of theinvention or sacrificing any of its advantages.

It will thus be seen that my improved device for leaky boiler-flues canbe applied to any form of a tubular boiler and when in use will permit afree circulation of water within and around the leaky flue to which itis applied. The device will prevent any water from leaking through thetube at any point by reason of the chamber formed within the same forcatching the leaking water and by the tight joints formed at each end ofthe device through the medium of the flexible or yielding washers onsaid device and held tightly against the flue-sheets of the boiler.

'It will be evident that the device can be inserted in any leakyboiler-flue at either end, and when applied at the smoke-box end whilethe fire is in the fire-box the fire can be spread or banked to allowthe same to be applied, and thereby permit the steam to remain in theboiler. It will also be evident that there will be no shutting orclosing up of the boiler-flue by the use of the device and adraft-chamber will be provided in the device to take the place of theboiler-flue and without interfering in any manner whatever with thepassage of the smoke through the flue formed by the device to the stack,while all liability of any water leaking through the boiler-flue intothe fire-box and putting out the fire therein is overcome, as well asthe possibility of boiler-explosions by such leaky flue is therebyprevented.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination with the flue-sheets, of a leaky boiler-flueextending through said sheets, a tube within said flue for forming achamber therein to close off the leak and for permitting the passage ofthe smoke through the same, and means fitting against said fluesheetsfor forming a tight joint and for securing said tube in place.

2. The combination with the flue-sheets, of a leaky boiler-flueextending through said sheets, a tube within said flue for forming achamber therein to close ofl the leak and for permitting the passage ofthe smoke through the same, and means on the ends of said tube andfitting against said flue-sheets for form ing a tight, joint and forsecuring the same in place.

3. The combination with the flue-sheets, of a leaky boiler-flueextending through said sheets, of a tube within said flue for forming achamber therein to close off the leak and of a leaky boiler-flue, of atube within saidflue for forming a chamber therein to close off the leakand for permitting the passage of the smoke through the same, washersaround the ends of said tube, and nuts engaging with the ends of saidtube and with said Washers and pressing the same against the flue-sheetstcl form a tight joint and secure said tube in ace. p 5. The combinationwith the flue-sheets, of a leaky boiler-flue, of a tube within said fluefor forming a chamber therein to close off the leak and for permittingthe passage of the smoke through the same, yielding washers around theends of said tube, a metal washer around one end of said tube, and nutsengaging with the ends of said tube and with said washers and pressingthe same against the flue-sheets to form a tight joint and secure saidtube in place.

In testimony whereof I, the said WILLIAM C. BRAoKEN, have hereunto setmy hand.

' WILLIAM C. BRACKEN. Witnesses:

- JOHN P. BRACKEN,

J. N. CooKE.

